fullpipe / check-them
Health checks for external services
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Requires
- php: >=7.2.0
Requires (Dev)
- friendsofphp/php-cs-fixer: ^2.16
- phpunit/phpunit: ^9.4
- predis/predis: ^1.1
- symfony/console: ^5.1
README
Install
composer require fullpipe/check-them
Usage
use Fullpipe\CheckThem\Checks\PDOCheck; $mysqlCheck = new PDOCheck('mysql:dbname=test_db;host=127.0.0.1:3306', 'username', 'password'); $status = $mysqlCheck->getStatus(); if(!$status->isUp()) { $this->logger->warn('Mysql server is down', $status->getError()); exit; }
or use AllInOneCheck
use Fullpipe\CheckThem\Checks\AllInOneCheck; use Fullpipe\CheckThem\Checks\PDOCheck; use Fullpipe\CheckThem\Checks\HttpCheck; use Fullpipe\CheckThem\Checks\RedisChecker; ... $allInOne = new AllInOneCheck(); $allInOne->add(new PDOCheck('mysql:dbname=test_db;host=127.0.0.1:3306', 'username', 'password')); $allInOne->add(new HttpCheck('user_service:8080')); $allInOne->add(new RedisChecker('redis:6379')); $status = $allInOne->getStatus(); if(!$status->isUp()) { $this->logger->warn('Something is down', $status->getError()); exit; } // everything is fine
Available checks
PDOCheck
It is just a simple wrapper over php.PDO.
It has the same constructor signature as the PDO
class. In theory, it works with all
PDO drivers, but was tested
only against MySQL and Postgres.
Examples
use Fullpipe\CheckThem\Checks\PDOCheck; ... $mysqlCheck = new PDOCheck('mysql:dbname=test_db;host=127.0.0.1:3306', 'username', 'password'); $pgCheck = new PDOCheck('pgsql:host=localhost;port=8002;dbname=test_db', 'username', 'password');
HttpCheck
Check external service by http request. To be up
service should respond with
200
http code.
Examples
use Fullpipe\CheckThem\Checks\HttpCheck; ... $userCheck = new HttpCheck('http://user_service:8080/healthz'); $webCheck = new HttpCheck('https://google.com/');
Config
$check = (new HttpCheck('http://user_service:8080/healthz')) ->setConnectionTimeout(3) // change connection timeout, default 1 second ;
RedisCheck
Checks redis server with PING
-> PONG
request.
Examples
use Fullpipe\CheckThem\Checks\RedisCheck; ... $check = new RedisCheck('tcp://10.0.0.1:6379'); $check = new RedisCheck('unix:/path/to/redis.sock');
Config
$check = (new RedisCheck('redis:6379')) ->setAuth('test_pass') // use password if required ->setConnectionTimeout(4) // timeout for server connection, default 1 second ->setStreamTimeout(3) // timeout for socket read/write operations, default 1 second ;
PredisCheck
If you already work with redis using predis.
You could use predis client for PING
check.
Examples
use Fullpipe\CheckThem\Checks\PredisCheck; ... $client = new Predis\Client([ 'scheme' => 'tcp', 'host' => '10.0.0.1', 'port' => 6379, ]); $check = new PredisCheck($client);
SocketCheck
Connects to service and waits for single char from service over a socket connection.
Examples
use Fullpipe\CheckThem\Checks\SocketCheck; ... // you could use this check for mysql, // it work fine and you don't need a password $check = new SocketCheck('mysql:3306');
Config
$check = (new SocketCheck('mysql:3306')) ->setConnectionTimeout(4) // timeout for server connection, default 1 second ->setStreamTimeout(3) // timeout for socket read/write operations, default 1 second ;
SocketConnectionCheck
Checks only that socket connection is working. It is not the check that you could rely on.
Examples
use Fullpipe\CheckThem\Checks\SocketConnectionCheck; ... $check = new SocketConnectionCheck('rabbitmq:5672');
Config
$check = (new SocketConnectionCheck('mysql:3306')) ->setConnectionTimeout(4) // timeout for server connection, default 1 second ;
AllInOneCheck
Checks all children to be available.
Examples
use Fullpipe\CheckThem\Checks\AllInOneCheck; use Fullpipe\CheckThem\Checks\SocketCheck; use Fullpipe\CheckThem\Checks\RedisCheck; ... $check = (new AllInOneCheck()) ->add(new SocketCheck('mysql:3306')) ->add((new RedisCheck('tcp://10.0.0.1:6379'))->setAuth('redisPass')) ;
Test
composer install docker-compose -f tests/docker-compose.yml up -d ./vendor/bin/phpunit
or if you want to play with service availability
docker-compose -f tests/docker-compose.yml up -d php ./tests/realtime_test.php docker-compose -f tests/docker-compose.yml restart mysql57